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ts_ft
Beginner
78 Views

How to breakdown the instruction mix on Core 2 Duo processor

Hi,

I want to get the instruction mix of my program on Core 2 Duo processor. On Pentiurm 4, I can use VTune to collect the total retired instructions, the floating point instructions, the load, the store, and the branch, then use substraction method to get the integer instructions. Does this methodology make sense?

However, On core 2 duo processor, when using same methodology, I have problem. The sum of memory instruction (load+store) and floating pointer instructions is larger than the total number of retired instructions. So I guess there is some overlap between memory instructions and floating pointer instruction. If so, how I can get accurate instruction mix on Core 2 Duo processor?

Any help is appreciated.

I use the following events to collect floating-point instructions:

SIMD_INST_RETIRED.PACKED_DOUBLE

SIMD_INST_RETIRED.PACKED_SINGLE

SIMD_INST_RETIRED.SCALAR_DOUBLE

SIMD_INST_RETIRED.SCALAR_SINGLE

X87_OPS_RETIRED.ANY

Thx,

Ts

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1 Reply
David_A_Intel1
Employee
78 Views

Not sure if this will help, but here is a document on using the Core2 Duo processor events for tuning.
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